Energy-delivering orthodontic aligner systems

Patent metadata

Field	Value
Publication number	US-12144704-B2
Application number	US-201916691141-A
Country	US
Kind code	B2
Filing date	Nov 21, 2019
Priority date	Nov 21, 2018
Publication date	Nov 19, 2024
Grant date	Nov 19, 2024

Abstract

Aligner systems and methods including a sequence of aligners having energy-delivering elements. For example, first and second aligners of the sequence of aligners may include first and second polymer shells that have shapes for applying respective first and second local forces to first and second regions of a dental arch to move one or more first teeth and one or more second teeth, respectively. The first and second aligners may also include corresponding first and second heating elements that are arranged to heat first and second target regions of the dental arch associated with moving the one or more first teeth and one or more second teeth, respectively. Heat energy from the first and second heating elements may improve an outcome of respective first and second stages of a treatment plan.

First claim

What is claimed is:

1. An aligner system comprising a sequence of aligners for treating a dental arch according to a treatment plan, the aligner system comprising:
a first aligner of the sequence of aligners, the first aligner comprising:
a first polymer shell comprising first teeth receiving cavities configured to fit on the dental arch having a first initial tooth arrangement according to a first stage of the treatment plan, the first teeth receiving cavities having a geometry corresponding to a first target tooth arrangement according to the first stage of the treatment plan, the first target tooth arrangement being different than the first initial tooth arrangement, wherein the first polymer shell has a shape that is customized to apply a first local force to a first region of the dental arch to move one or more first teeth of the dental arch from the first initial tooth arrangement toward the first target tooth arrangement according to the first stage of the treatment plan; and
a first controller configured to cause a first heating element to emit heat energy from a first heat output region of the first polymer shell according to a first predetermined heating profile, wherein the first heat output region is arranged to heat a first target region of the dental arch that is associated with moving the one or more first teeth of the dental arch, wherein the heat energy from the first heat output region has a first dose to interact with tissue associated with the one or more first teeth to improve an outcome of the first stage of the treatment plan; and

a second aligner of the sequence of aligners, the second aligner comprising:
a second polymer shell comprising second teeth receiving cavities configured to fit on the dental arch having a second initial tooth arrangement according to a second stage of the treatment plan, the second teeth receiving cavities having a geometry corresponding to a second target tooth arrangement according to the second stage of the treatment plan, the second target tooth arrangement being different than the second initial tooth arrangement, wherein the second polymer shell has a shape that is customized to apply a second local force to a second region of the dental arch to move one or more second teeth of the dental arch from the second initial tooth arrangement toward the second target tooth arrangement according to the second stage of the treatment plan; and
a second controller configured to cause a second heating element to emit heat energy from a second heat output region of the second polymer shell according to a second predetermined heating profile, wherein the second heat output region is arranged to heat a second target region of the dental arch that is associated with moving the one or more second teeth of the dental arch, the one or more second teeth being different from the one or more first teeth, wherein the heat energy from the second heat output region has a second dose to interact with tissue associated with the one or more second teeth to improve an outcome of the second stage of the treatment plan;
wherein the second aligner is after the first aligner in the sequence of aligners.

2. The aligner system of claim 1 , wherein:
each of the first and second heat output regions is bounded by material having a lower thermal conductance than respective first and second heat output regions.

3. The aligner system of claim 1 , wherein the first and second heat output regions are positioned to emit the heat energy along an edge region between a tooth-contacting side and an outer side of the corresponding first or second teeth receiving cavities, wherein the tooth-contacting side is arranged to contact teeth of the dental arch when worn on the dental arch, and wherein the outer side is arrange not to contact the teeth of the dental arch when worn on the dental arch.

4. The aligner system of claim 1 , wherein each of the first and second heating elements is arranged to deliver the respective heat energy to one or more of: the teeth, gingiva, and palate of the patient.

5. The aligner system of claim 1 , wherein each of the first and second heat output regions is configured to emit the respective heat energy from a lingual side of corresponding first and second teeth receiving cavities.

6. The aligner system of claim 1 , wherein each of the first and second regions of the dental arch comprises a subset of the dental arch.

7. The aligner system of claim 1 , wherein the one or more first and second teeth include at least one tooth in common.

8. The aligner system of claim 1 , wherein each of the first and second aligners is configured to regulate emission of the heat energy one or more times per day depending on the day of the week.

9. The aligner system of claim 1 , wherein each of the first and second aligners is configured to regulate a duration of emitting the heat energy.

10. The aligner system of claim 1 , wherein each of the first and second aligners is configured to regulate emission of the heat energy to multiple times in the day.

11. The aligner system of claim 1 , wherein each of the first and second aligners is configured to control timing of the heat energy based on whether the time of day is one or more of: nighttime, daytime, morning, and evening.

12. The aligner system of claim 1 , wherein each of the first and second aligners is configured to emit the heat energy for a respective customized first or second emission duration that is determined based on the treatment plan, wherein the first heat output region is configured to emit the first predetermined heating profile for a first emission duration and the second heat output region is configured to emit the second predetermined heating profile for a second emission duration that is different than the first emission duration.

13. The aligner system of claim 1 , wherein each of the first and second aligners is configured to limit an amount of heat energy delivered to the respective one or more first or second teeth.

14. The aligner system of claim 13 , wherein the first aligner is configured to limit the amount of heat energy delivered to the one or more first teeth to a first amount of heat energy, and the second aligner is configured to limit the amount of heat energy delivered to the one or more second teeth to a second amount of heat energy that is different than the first amount of heat energy.

15. The aligner system of claim 1 , wherein the first controller is configured for feedback control of a first temperature of the first heat output region, and the second controller is configured for feedback control of a second temperature of the second heat output region.

16. The aligner system of claim 15 , wherein the first aligner includes a first thermistor configured for feedback to the first controller, and the second aligner includes a second thermistor configured for feedback to the second controller.

17. The aligner system of claim 1 , wherein a material of the first and second heat output regions have a higher thermal conductance than a material of adjacent regions of respective first and second polymer shells.

18. The aligner system of claim 1 , wherein each of the first and second controllers is configured to cause the corresponding first or second heating element to deliver the dose of the heat energy based on sensed data, wherein the sensed data comprises one or more of: movement, jaw position, tooth position, force or pressure on the corresponding one or more first or second teeth.

19. An orthodontic aligner system comprising a sequence of al

Assignees

• Align Technology Inc

Inventors

• Cam Bruce
• Shanjani Yaser
• Sato Jun

Classifications

• A61N5/0613

  Apparatus adapted for a specific treatment · CPC title

• A61N2005/063

  comprising light transmitting means, e.g. optical fibres · CPC title

• A61N2005/0662

  Visible light · CPC title

• A61N2005/0606

  Mouth · CPC title

• A61F2007/0017

  Mouth · CPC title